The Human Expedition was a league of Alliance military and civilian groups that fled to Kalimdor during the Plague of Undeath. They were led by Lady Jaina Proudmoore, who was determined to find a safe haven for her people, she being the only human who listened to the Prophet Medivh and fled.

While called the "Human Expedition", the military forces had dwarves and high elves as well as humans, and it is possible members of the Alliance races were also amongst the other human civilians that traveled with them.

The Human Expedition was composed of several groups, including:

The "Human Expediton"[1][2] — Besides the complete organization, the term Human Expediton is used to refer a faction within the group.

Only survivors?

This article or section includes speculation, observations or opinions possibly supported by lore or by Blizzard officials. It should not be taken as representing official lore.

It is implied in Warcraft III that the Expedition was most, if not all, of the survivors of the Eastern Kingdoms. Garithos' and Kael'thas Sunstrider's forces were revealed later, but their existence does not contradict this, as they were forgotten stragglers. The arrival of the Kul Tiras navy doesn't contradict this either as they were out to sea during the plague and said to have gone back to the main land one last time to look for survivors.

This was not proven to be false until the release of the RPG books where it is told that many of Lordaeron's survivors of the plague fled for refuge to the south into the lands of Khaz Modan and Azeroth.WRPG 214 Some of the earlier passages continued to hint at them being most of the survivors with humans on Theramore, dwarves and gnomes at Bael Modan, and Wildhammers on Hyjal. It could be that the people who fled to Kalimidor actually thought they were the only survivors as the RPG books state that for a long time it was hard to get news about the Eastern Kingdoms by ship across the Maelstrom safely.